Systems, methods and apparatus for dispensing sheets of material

ABSTRACT

A sheet dispensing apparatus for dispensing sheets from a sheet material card having a plurality of sheets. The sheet dispensing apparatus includes a sensor, a motor including a motor shaft, a supply roller operatively connected to the motor, an indicator, and a controller operatively connected to the proximity sensor and to the indicator. The controller includes a processor and a memory configured to store program instructions. The processor is configured to execute the stored program instructions to: detect a first presence of an object with the sensor; move the supply roller into contact with one sheet of the plurality of sheets in response to the detecting the first presence of the object; rotate the motor shaft a first time to move the supply roller a predetermined angle of rotation to dispense the one sheet; and stop the motor shaft when the predetermined angle of rotation has been completed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part application of U.S. patent application Ser. No. 15/313,495, having the title SYSTEMS, METHODS, AND APPARATUSES FOR DISPENSING SHEETS OF MATERIAL, filed Nov. 22, 2016, and which claims priority to European Patent Application No. 15001414.0, filed on May 12, 2015, both of which are incorporated by reference herein in their entirety.

FIELD OF THE DISCLOSURE

The present invention relates to a machine that dispenses a product, and more particularly to a sheet dispensing machine that dispenses a sheet of material from a stack of materials.

BACKGROUND

Reliably dispensing sheets of material, including for example paper products from a stack of joined paper products, is often difficult. For example, the stack of material sheets may be joined at one end in a manner such that the application of an appropriate force upon a single sheet will cause it to separate from the remainder of material sheets. In many dispensers of such materials, a mechanical arm may contact the outermost sheet in the stack and tear it away from the remainder of the stack. However, the mechanical arm often contacts the sheet material in a very small area relative to the area of the sheet material itself. As a result, where the material sheets do not have great tensile strength, the sheets are prone to tearing during dispensing. Additionally, the mechanical arm may not disengage the outermost sheet after the outermost sheet is torn away from the remainder of the stack, causing difficulty in the ultimate removal of the sheet material from the dispenser. One such example of the dispensing of material sheets is in the use of thin material sheets used to provide a sanitary barrier between a user of a device and the device, including for example, toilet seat covers.

What is needed is a more reliable system, method, and apparatus for dispensing sheets of material. The present application appreciates that providing such a system, method, and apparatus may be a challenging endeavor.

SUMMARY

In one embodiment, there is provided a method for dispensing with a sheet dispenser a sheet from a plurality of sheets. The method includes: detecting a plurality of object sensing events with an object sensor; for each object sensing event, moving a supply roller into contact with a sheet of the plurality of sheets and rotating a motor shaft to dispense the sheet with the supply roller; for each rotation of the motor shaft, updating a value stored in a counter to indicate the number of sheets being dispensed from the plurality of sheets; comparing the stored value to a predetermined value; and illuminating a light to emit a pattern when the stored number reaches the predetermined value, wherein the light illumination provides an indication that the sheet dispenser requires additional sheets for dispensing.

In another embodiment, there is provided a sheet dispensing apparatus including a wall configured to support a sheet material card having a plurality sheets. The apparatus includes an object sensor configured to dispense a sheet from the sheet material card in response to activation by a user and a supply roller connected to a shaft. The supply roller includes a radiused portion and at least one truncated portion. A retracting roller is connected to a shaft, wherein the retracting roller has a radiused portion, and at least one truncated portion. A supporting plate is engaged and disengaged by the retracting roller during rotation of the shaft. The radiused portion of the supply roller is directed in a first direction and the radiused portion of the retracting roller is directed in a second direction, wherein the first direction is different from the second direction. The object sensor is operatively connected to the shaft through a processor and activates disengagement of the retracting roller from the supporting plate and activates the supply roller to translate toward the wall of the sheet dispensing apparatus for dispensing a sheet from the sheet material card.

In a further embodiment, there is provided a sheet dispensing apparatus including a wall configured to support a sheet material card having a plurality sheets. The apparatus includes a sensor, a motor including a motor shaft, a supply roller operatively connected to the motor, an indicator, and a controller operatively connected to the sensor and to the indicator. The controller includes a processor and a memory configured to store program instructions. The processor is configured to execute the stored program instructions to: detect a first presence of an object with the sensor; move the supply roller into contact with one sheet of the plurality of sheets in response to the detecting the first presence of the object; rotate the motor shaft a first time to move the supply roller a predetermined angle of rotation to dispense the one sheet; and stop the motor shaft when the predetermined angle of rotation has been completed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying figures, which are incorporated in and constitute a part of the specification, illustrate various example apparatuses, systems, and methods, and are used merely to illustrate various example embodiments.

FIG. 1 illustrates a perspective view of an example arrangement of a dispensing apparatus 100.

FIG. 2A illustrates a sectional view of an example arrangement of a dispensing apparatus 200.

FIG. 2B illustrates a sectional view of an example arrangement of dispensing apparatus 200.

FIG. 3 illustrates an elevational view of an example arrangement of a dispensing apparatus.

FIG. 4 illustrates an elevational view of an example arrangement of a sheet material card containing multiple sheets 412.

FIG. 5A illustrates an example arrangement of a retracting roller 520, a sheet supply roller 514, and a sheet material 512.

FIG. 5B illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5C illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5D illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5E illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5F illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5G illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5H illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5I illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 5J illustrates an example arrangement of retracting roller 520, sheet supply roller 514, and sheet material 512.

FIG. 6 illustrates a perspective view of a retracting roller 620.

FIG. 7 illustrates an elevational view of a retracting roller 720.

FIG. 8 illustrates a perspective view of a sheet supply roller 814.

FIG. 9 illustrates a block diagram of the sheet dispenser apparatus.

FIG. 10 is a flow diagram illustrating one or more operating procedures of a sheet dispensing apparatus.

FIG. 11 illustrates a perspective view of an example arrangement of a dispensing apparatus.

FIG. 12 illustrates a sectional view of an example arrangement of a dispensing apparatus.

DETAILED DESCRIPTION

Sheet material dispensers, such as that disclosed in European Patent Application Publication No. EP2522265 (A1), may utilize feed rollers in order to advance a sheet material from a sheet material storage device, such as a card of sheet products. The sheet material may be attached in a stack to the card (which may include a substrate configured to be attached to the interior of the dispenser) via a perforated, or otherwise limited, connection, such that the application of a force pulling the sheet material away from the card may cause it to separate at predesignated points. A single layer of sheet material may be accordingly advanced out of the dispenser so as to permit manipulation of the sheet material by a user, including allowing a user to grasp the sheet material and remove it completely from the dispenser. European Patent Application Publication No. EP2522265 (A1) is incorporated by reference herein in its entirety.

In one embodiment, the various dispensing apparatuses disclosed herein may be used for a specific purpose, including for example, the dispensing of thin paper toilet seat covers. The toilet seat covers may be contained and/or dispensed in a substantially flat state. The toilet seat covers may be contained and/or dispensed in a substantially folded state, so as to reduce the necessary size of the dispensing apparatus. However, it is understood that the various dispensing apparatuses disclosed herein may be used to dispense any of a variety of sheet materials from an internal storage area, including for example: a paper, a cardboard, a polymer, a metal, an alloy, an organic material, a textile, and the like. Further, it is understood that the various dispensing apparatuses disclosed herein may be used to dispense any sheet material contained on a card of sheet products.

In one embodiment, the various dispensing apparatuses disclosed herein may be used to dispense a perforated towel. In one embodiment, the various dispensing apparatuses disclosed herein may be used to dispense at least one of a flat fold towel, a soft fold towel, an inter-fold towel, a continuous roll towel, and a perforated roll towel.

FIG. 1 illustrates an example arrangement of a dispensing apparatus 100. Apparatus 100 may include a cover 102, a rear wall 104, at least one side wall 106, and a dispensing port 108. Apparatus 100 may be formed from any of a variety of materials, including for example: a polymer, a metal, an alloy, an organic material, and the like. Apparatus 100 may include any of a variety of shapes necessary to store and dispense sheet materials.

Apparatus 100 may include at least one sensor 110. At least one sensor 110 may include any of a variety of sensors configured to activate apparatus 100 to cause at least one article of sheet material to be dispensed. Sensor 110 may be operatively connected to at least one of a printed circuit board, a power source, and a power supply.

In one embodiment, sensor 110 is a capacitive sensor configured to sense the presence of a user's body part, such as the user's hand, in the proximity of apparatus 100. The capacitive sensor may relay the sensing of the proximity of a user's hand to a printed circuit board (not shown), which may cause an electric motor (not shown) to rotate a supply roller (not shown), which may cause a single article of a sheet material to be dispensed from apparatus 100. Sensor 110 may be a capacitive sensor oriented within apparatus 100, rather than on cover 102. That is, no sensor may be present on cover 102 in one embodiment, but rather the sensor may be contained within apparatus 100.

In another embodiment, sensor 110 is an infrared sensor. Sensor 110 may be a passive infrared sensor. Sensor 110 may sense motion. Sensor 110 may sense motion of a user near apparatus 100. Sensor 110 may sense motion of a user's hand waved near apparatus 100, thus indicating that the user requests the dispensing of at least one article of a sheet material from apparatus 100.

Sensor 110 may include a light sensor configured to sense lights activated near apparatus 100, such that the activation of lights near apparatus 100 causes apparatus 100 to dispense an article of a sheet material. Sensor 110 may be a touch sensor, such that a user physically touches sensor 110 when the user desires the dispensing of a sheet material from apparatus 100. Sensor 110 may include a microphone, and may sense noise caused by a user, which may cause apparatus 100 to automatically dispense a sheet material from apparatus 100 in anticipation of a user desiring an article of sheet material. Sensor 110 may include a microphone configured to permit voice recognition capabilities, such that a user may speak a specific word or term to cause the dispensing of a sheet material from apparatus 100. Sensor 110 may sense temperature, such as the body heat of a user present near apparatus 100, and may dispense an article of sheet material in anticipation of a user desiring an article of sheet material. Sensor 110 may include an RFID reader configured to sense the presence of a tag in the possession of a user, such that an article of sheet material is only dispensed to specific users. Sensor 110 may include a shock sensor configured to sense a user moving near apparatus 100, touching apparatus 100, tapping on apparatus 100 with an object or body part, or the like, after which apparatus 100 may dispense an article of a sheet material.

Sensor 110 may be in communication with an external surface of apparatus 100. Sensor 110 may be contained completely internally within apparatus 100.

In one embodiment, apparatus 100 does not include a sensor 110, but rather includes a switch actuated by a user when requesting the dispensing an article of sheet material. The switch may include any of a variety of switches configured to close a circuit, including for example, a button. In another embodiment, apparatus 100 includes both sensor 110 and a switch.

In one embodiment, apparatus 100 may include, with or without sensor 110, wireless networking capabilities, such that apparatus 100 may be remotely activated via a Bluetooth connection, a Wi-Fi connection, a radio signal, a cellular signal, or the like.

FIGS. 2A and 2B illustrate an example arrangement of a dispensing apparatus 200. Dispensing apparatus 200 may include a cover 202, a rear wall 204, and at least one side wall 206. Dispensing apparatus 200 may include a sensor 210.

Apparatus 200 may include at least one dispensing port 208. Dispensing port 208 may be oriented in at least one side wall 206. Dispensing port 208 may be configured and positioned to permit the passage of an article of a sheet material 212 to pass through dispensing port 208.

Cover 202 may be selectively removable to allow one to access the interior of apparatus 200. Cover 202 may be removably connected to rear wall 204 via any of a variety of mechanisms, including at least one of a hinge, a fastener, a friction fit, a sliding channel, clips, and the like. Cover 202 may be a door.

Rear wall 204 may be connected to a surface, such as a wall, a floor, a ceiling, another object, a post, and the like. Rear wall 204 may be permanently connected to a surface, or removably connected to a surface.

One or more sheet materials 212 may be contained within apparatus 200. Sheet materials 212 may be oriented in a stack. Sheet materials 212 may be oriented in a stack on a card, wherein the card contains the sheet materials 212 in the stack, and may act as a substrate to attach sheet materials 212 to an interior surface of apparatus 200. Sheet materials 212 may be attached to, or oriented near, rear wall 204.

Apparatus 200 may include at least one supply roller 214. Supply roller 214 may be configured to rotate. Supply roller 214 may be operatively connected to a motor (not shown). Supply roller 214 may be configured to contact at least one article of sheet material 212. Supply roller 214 may contact at least one article of sheet material 212 while rotating, causing the at least one article of sheet material 212 to be dispensed through dispensing port 208. Supply roller 214 may have an abrasive, soft, tacky, or otherwise increased friction exterior surface. Supply roller 214 may include a rubber coating 216 oriented about at least a portion of its exterior surface.

Supply roller 214 may have truncated cylinder shape, such that when supply roller 214 is oriented as illustrated in FIG. 2A, it is not in contact with sheet material 212. As such, supply roller 214 may have a radiused portion and a truncated portion. Rubber coating 216 may not extend completely about supply roller 214, but rather, may only extend about that portion of supply roller that is radiused.

Supply roller 214 may be operatively connected to a rotation shaft 218. Shaft 218 may be operatively connected to a motor (not shown). Supply roller 214 may be directly connected to shaft 218. Shaft 218 may extend at least partially through supply roller 214.

Apparatus 200 may include a retracting roller 220. Retracting roller 220 may include a radiused portion and at least one flat, truncated portion. In one embodiment, retracting roller 220 includes a radiused portion, and three flat, truncated portions. Retracting roller 220 may be operatively connected to a motor (not shown). Retracting roller 220 may be configured to rotate. Retracting roller 220 may be configured to rotate with supply roller 214. Retracting roller 220 may rotate directly with supply roller 214, such that retracting roller 220 and supply roller 214 rotate the same amount as one another, for example, 360 degrees.

Retracting roller 220 may be operatively connected to a rotation shaft 218. Shaft 218 may be operatively connected to a motor (not shown). Retracting roller 220 may be directly connected to shaft 218. Shaft 218 may extend at least partially through retracting roller 220.

Retracting roller 220 may include a radiused portion that is directed in a first direction, while supply roller 214 may have a radiused portion that is directed in a second direction, and the first and second directions may be opposite one another (about 180 degrees from one another).

Apparatus 200 may include a mounting plate 222. Mounting plate 222 may include one or more substantially planar portions separated by bends. Mounting plate 222 may be connected to an interior of cover 202, rear wall 204, or side wall 206. Mounting plate 222 may be connected to an interior of apparatus 200 by any of a variety of mechanisms, including for example a fastener 224. Mounting plate 222 may be connected to a fixing plate 226, which may be connected to an interior of apparatus 200, including for example, an interior surface of cover 202. Mounting plate 222 may be connected to fixing plate 226 via fastener 224. Fastener 224 may include any of a variety of fasteners. Fastener 224 may include a shaft forming a hinge. Mounting plate 222 may be hingedly connected to fixing plate 226. Fastener 224 may be a fixing shaft.

Mounting plate 222 may be operatively connected to at least one of supply roller 214, retracting roller 220, and shaft 218. Mounting plate 222 may be connected to supply roller 214, retracting roller 220, and shaft 218.

Mounting plate 222 may be additionally connected to cover 202 via at least one supporting tab 228. Supporting tabs 228 may act as struts to support mounting plate 222. In one embodiment, mounting plate 222 may deflect during dispensing of sheet material 212. Mounting plate 222 may bend about at least one supporting tab 228.

Mounting plate 222 may include an electronics box 230. Electronics box 230 may contain at least some of the electronics of apparatus 200. Electronics box 230 may include for example a power source, such as a battery or a direct connection to electricity running through a building. Electronics box 230 may also include at least one printed circuit board. Electronics box 230 may include at least one programmable controller chip. Electronics box 230 may include circuitry and other wiring necessary for the operation of apparatus 200. For example, sensor 210 may be in electrical communication with electronics box 230. As another example, a motor (not shown) may be in electrical communication with electronics box 230. A power source may include at least one of: a battery, electricity from wall receptacle, electricity from a generator, a solar panel, a photo panel, and the like.

In one embodiment, electronics box 230 includes a programmable controller chip. The programmable controller chip may be programmed to allow at least one of: the adjustment of the period of time for which the motor (illustrated in FIG. 3 at 340) is operated to discharge one piece of sheet material 212; the indication of a low accumulator or battery charge level by giving a light and/or audio signal; the recognition of the appropriate sheet material 212 (e.g., proprietary material); the connection of a coin recognition system; the storage and playback of promotional and awareness raising audio materials.

In one embodiment, a power source is located within dispenser 200, but outside of electronics box 230. The power source may be a battery oriented within dispenser 200 near mounting plate 222, but outside of electronics box 230.

Electronics box 230 may include a counter (not shown) configured to count the number of dispenses of sheet material 212. Electronics box 230 may include a counter (not shown) configured to count the number of dispenses of sheet material 212 and alert a user when dispenser 200 is out of sheet material 212. Electronics box 230 may include a counter (not shown) configured to count the number of dispenses of sheet material 212 and alert a user when dispenser 200 is almost out of sheet material 212 and has dispensed an amount specified. For example, a user may desired to be alerted when 10% or less of sheet material 212 is remaining in dispenser 200. Thus, electronics box 230 may alert a user when 90% of sheet material 212 has been dispensed.

In one embodiment, dispenser 200 includes an aperture (not shown) in cover 202, which may allow a user to visually inspect the quantity of sheet material 212 remaining in dispenser 200. In one embodiment, a sheet material card (not shown) may be colored with a color significantly contrasting with the color of sheet material 212. A user may visually inspect and recognize the color of the sheet material card, thus knowing that dispenser 200 is empty. Alternatively, rear wall 204 may include a color significantly contrasting with the color of sheet material 212.

In one embodiment, dispenser 200 includes a light or other signal that is activated upon the dispensing of all of sheet material 212, or a specified quantity of sheet material 212 (e.g., 90%).

In one embodiment, electronics box 230 may include a reset button, which reset button may indicator that a full stack of sheet material 212 has been inserted into dispenser 200, after which electronics box 230 may start over its counting of the number of sheet materials 212 dispensed.

Mounting plate 222 comprising a biasing material, which when bent, may provide a force against bending in an attempt to be straight. Mounting plate 222 may comprise a spring steel, polymer, organic material, laminated material, alloy, composite, or the like.

Stated differently, when mounting plate 222 is deflected due to contact between supply roller 214 and sheet material 212, mounting plate 222 may provide a bias against this deflection, providing a force to keep supply roller 214 in contact with sheet material 212. When mounting plate 222 is deflected due to contact between retracting roller 220 and a supporting plate 232 connected to an interior surface of apparatus 200, mounting plate 222 may provide a bias against this deflection, providing a force to keep retracting roller 220 in contact with supporting plate 232. Mounting plate 222 may be flexible.

Supporting plate 232 may at least partially circumvent retracting roller 220. Supporting plate 232 may be operatively connected to apparatus 200. Supporting plate may be operatively connected to an interior surface of cover 202. Supporting plate may be connected to an interior surface of cover 202. Supporting plate may be connected to any interior surface of apparatus 200.

Retracting roller 220 may engage supporting plate 232 at some point during the rotation of retracting roller 220. Retracting roller 220 may be configured to engage supporting plate 232 to limit the translation of supply roller 214 toward sheet material 212.

As illustrated in FIG. 2B, a dispensed sheet 234 may be advanced through dispensing port 208.

Dispenser 200 may include a code reader 233. Code reader 233 may be configured to read a proprietary code located on one or more of sheet material 212, a sheet material card (not shown), or the like. In one embodiment, code reader 233 seeks a proprietary code located on one or more of sheet material 212, a sheet material card (not shown), or the like. If code reader 233 cannot locate the necessary proprietary code, dispenser 200 may be deactivated to prevent damage, jamming, or other difficulties caused by the dispensing of non-proprietary sheet material 212.

Code reader 233 may be an RFID reader, where sheet material 212 or a sheet material card (not shown) includes a proprietary RFID tag.

Code reader 233 may be a magnetic sensing system. The magnetic sensing system code reader 233 may sense and/or read a magnetic strip oriented on sheet material 212 or a sheet material card (not shown). The magnetic strip may include proprietary codes to prevent use of non-proprietary sheet material 212. The magnetic strip may be printed on sheet material 212 or a sheet material card. The magnetic strip may be adhered to sheet material 212 or a sheet material card.

Code reader 233 may include any reader, existing or to be developed in the future, that may communicate with sheet material 212 or a sheet material card to ensure that proprietary material is being dispensed from dispenser 200.

Code reader 233 may be a bar code reader, where sheet material 212 or a sheet material card (not shown) includes a proprietary bar code.

FIG. 3 illustrates an example arrangement of a dispensing apparatus. The apparatus may include a fixing plate 326, a fastener 324, a mounting plate 322, at least one supporting tab 328, an electronics box 330, a supporting plate 332, a retracting roller 320, a supply roller 314, the supply roller 314 having a rubber coating 316, and a shaft 318 operatively connected to the retracting roller 320, and the supply roller 314.

A motor 340 may be operatively connected to shaft 318. Motor 340 may cause shaft 318 to rotate, which may in turn cause retracting roller 320 and supply roller 314 to rotate. As retracting roller 320 rotates, it may disengage supporting plate 332, which may allow supply roller 314 to contact a sheet material (e.g., sheet material 212). As supply roller 314 rotates, it may pull a single article of the sheet material from its stack and cause it to advance from the apparatus. As supply roller 314 continues to rotate, retracting roller 320 may engage supporting plate 332, causing supply roller 314 to retract away from the stack of sheet material, and thus allowing a user to withdraw the article of sheet material from the apparatus without restriction.

Motor 340 may be an electric motor powered by a battery oriented within the apparatus. Motor 340 may be an electric motor powered by an electrical source exterior to the apparatus.

An aperture may be formed in mounting plate 322 for the supply roller 314. The aperture may allow supply roller 314 to extend beyond the plane of mounting plate 322 during supply roller 314's movement.

In one embodiment, a microswitch 331 is fixed on mounting plate 322, at the side toward supply roller 314. A microswitch activating cam 333 may extend from a side of supply roller 314. Microswitch activating cam 333 may contact microswitch 331, causing motor 340 to stop while supply roller 314 is in a retracted position. Microswitch 331 may ensure that motor 340 only complete one single revolution (about 360 degrees) upon each activation of motor 340.

FIG. 4 illustrates example arrangement of a sheet material card containing multiple sheets 412. The sheet material card may include a plurality of sheets 412 stacked on top of one another. Sheets 412 may be folded, such that the dispenser apparatus would dispense a folded sheet, and the user would unfold the sheet prior to use. Sheets 412 may not be folded. Sheets 412 may be mounted directly to a substrate 444. Substrate 444 may include at least one sheet mounting aperture 446 configured to engage at least a portion of a dispensing apparatus (e.g., rear wall 204 illustrated in FIGS. 2A and 2B).

In one embodiment, sheets 412 are connected to substrate 444 via a perforated connection that is configured to break upon application of force from a supply roller. In another embodiment, sheets 412 are connected to substrate 444 via a limited connection that is configured to break upon application of force from a supply roller. In this manner, sheets 412 may be removed from substrate 444 without tearing sheet 412 in its main body. Sheets 412 may be connected to substrate 444 via staples, which may permit sheet 412 to be easily torn from substrate 444. Sheets 412 may be connected to substrate 444 via an adhesive or glue, which may permit sheet 412 to be easily torn from substrate 444.

The sheet material card may include a coded element 447. Coded element 447 may be oriented on substrate 444. Coded element 447 may be oriented on sheets 412. Coded element 447 may include a proprietary RFID tag. Coded element 447 may include a proprietary bar code.

FIGS. 5A-5J illustrate an example arrangement of a retracting roller 520, a sheet supply roller 514, and a sheet material 512. Supply roller 514 may include a rubber coating 516. Supply roller 514 and retracting roller 520 may be connected to a shaft 518.

Retracting roller may engage a supporting plate 532. Supporting plate 532 is illustrated simply in FIGS. 5A-5J to avoid the illustration of supporting plate 532 interfering with the view of retracting roller 520 and supply roller 514. It is understood, however, that the portion of supporting plate 532 illustrated in FIGS. 5A-5J may be the only portion of supporting plate 532 that retracting roller 520 engages during operation of the dispensing apparatus.

Sheet material 512 may be oriented in a stack. Sheet material 512 may be attached to a substrate 544. Sheet material 512 may be connected to substrate 544 via a limited connection 548 configured to break, tear, or otherwise disconnect upon application of a force upon a single sheet 512 by supply roller 514.

As illustrated in FIG. 5A, the radiused portion of supply roller 514 is oriented away from sheet material 512 between dispensing of articles of sheet material 512. The radiused portion of the retracting roller 520 is oriented toward sheet material 512 between dispensing of articles of sheet material 512.

Upon initiation of a dispensing operation, supply roller 514 and retracting roller 520 rotate clockwise (see FIG. 5B). FIGS. 5C-5G illustrate supply roller 514 contacting and dispensing a dispensed sheet 534, while retracting roller 520 is rotated such that its radiused portion is out of contact with supporting plate 532. As a result of retracting roller 520 rotating out of contact with supporting plate 532, supply roller 514 is permitted to be translated into contact with sheet material 512 due to biasing of mounting plate (222 in FIGS. 2A and 2B). [0081] FIG. 5H illustrates the radiused portion of retracting roller 520 again contacting supporting plate 532, causing supply roller 514 (and mounting plate 222) to move away from sheet material 512. As illustrated, supply roller 514 is removed from contact with sheet material 512 upon the radiused portion of retracting roller 520 contacting support plate 532.

FIGS. 5I and 5J illustrate supply roller 514 (and mounting plate 222) being forced to move further from sheet material 512. As a result, a user is able to draw dispensed sheet 534 from the apparatus, without any portion of dispensed sheet 534 engaging, snagging on, or otherwise contacting, any portion of the dispensing mechanism (retracting roller 520, supply roller 514, and mounting plate 222). In this manner, a user is able to remove dispensed sheet 534 without tearing it. In this manner, the dispenser is unlikely to jam, as the use of retracting roller 520 and supply roller 514, as described herein, provided surprising results in the reliability of the dispensing apparatus.

As illustrated, during dispensing of a single sheet material 512, supply roller 514 and retracting roller 520 may rotate about 360 degrees. In another embodiment, during dispensing of a single sheet material 512, supply roller 514 and retracting roller 520 may rotate more than about 360 degrees. In another embodiment, during dispensing of a single sheet material 512, supply roller 514 and retracting roller 520 may rotate less than about 360 degrees.

FIG. 6 illustrates a retracting roller 620. Retracting roller 620 may include a radiused portion 651 and at least one truncated portion 652, 654. In one embodiment, retracting roller 620 includes two side truncated portions 652, and one rear truncated portion 654, rear truncated portion 654 being opposite radiused portion 651, and side truncated portions 652 being oriented between rear truncated portion 654 and radiused portion 651. Retracting roller 620 may include a shaft aperture 656 configured to accept a shaft, such as shaft 218, 318, 518.

FIG. 7 illustrates a retracting roller 720. As illustrated, retracting roller 720 may include a radiused portion having a radius R1. Retracting roller 720 may include side truncated portions having a radius R2. Retracting roller 720 may include rear corner portions having a radius R3. Retracting roller 720 may include a rear truncated portion having a radius R4. The value of R1 may be greater than the value of R2, R3, and R4. R3 may be greater than R2 and R4, but lesser than R1. R2 may be about equal to R4.

Retracting roller 720 may have an isosceles trapezoid-shaped cross-section, except that the longer base of the isosceles trapezoid has a curved, radiused portion (e.g., 651).

FIG. 8 illustrates a sheet supply roller 814. Supply roller 814 may include a rubber coating 816 covering its radiused portion. Supply roller 814 may include a truncated portion 862. Supply roller 814 may include a shaft aperture 860 configured to accept a shaft, such as shaft 218, 318, 518. The radiused portion of supply roller 814 may have a radius R1. Truncated portion 862 may have a radius R2. The value of radius R1 may be greater than the value of R2.

In one embodiment, supply roller 814 about 70% of a complete cylinder, the 30% being removed to form the truncated cylinder.

To the extent that the term “includes” or “including” is used in the specification or the claims, it is intended to be inclusive in a manner similar to the term “comprising” as that term is interpreted when employed as a transitional word in a claim. Furthermore, to the extent that the term “or” is employed (e.g., A or B) it is intended to mean “A or B or both.” When the applicants intend to indicate “only A or B but not both” then the term “only A or B but not both” will be employed. Thus, use of the term “or” herein is the inclusive, and not the exclusive use. See Bryan A. Garner, A Dictionary of Modern Legal Usage 624 (2d. Ed. 1995). Also, to the extent that the terms “in” or “into” are used in the specification or the claims, it is intended to additionally mean “on” or “onto.” To the extent that the term “selectively” is used in the specification or the claims, it is intended to refer to a condition of a component wherein a user of the apparatus may activate or deactivate the feature or function of the component as is necessary or desired in use of the apparatus. To the extent that the term “operatively connected” is used in the specification or the claims, it is intended to mean that the identified components are connected in a way to perform a designated function. To the extent that the term “substantially” is used in the specification or the claims, it is intended to mean that the identified components have the relation or qualities indicated with degree of error as would be acceptable in the subject industry. As used in the specification and the claims, the singular forms “a,” “an,” and “the” include the plural. Finally, where the term “about” is used in conjunction with a number, it is intended to include ±10% of the number. In other words, “about 10” may mean from 9 to 11.

As further illustrated in FIG. 9, the electronics box 203 includes a controller 900 including a processor 902 and a memory 904. The memory 904 is configured to store program instructions and the processor 902 is configured to execute the stored program instructions in response to transmitted signals received from the user sensor 110 and a magnet sensor 906. In one embodiment, the magnet sensor is the magnetic sensing system code reader 233. In another embodiment, the magnet sensor 906 is configured to detect the presence or absence of a magnet 908, which is located in the sheet material card 412 of FIG. 4. In addition, the controller 900 is operatively connected to the motor 340, as described herein, to dispense a sheet of material as described herein.

The controller 900, in different embodiments, includes a computer, computer system, or other programmable devices. In other embodiments, the controller 900 includes one or more processors (e.g. microprocessors or programmable controller chips), and an associated memory, which can be internal to the processor of external to the processor. The memory 904 can include random access memory (RAM) devices comprising the memory storage of the controller 900, as well as any other types of memory, e.g., cache memories, non-volatile or backup memories, programmable memories, or flash memories, and read-only memories. In addition, the memory, in different embodiments, includes a memory storage physically located elsewhere from the processing devices and any cache memory in a processing device, as well as any storage capacity used as a virtual memory, e.g., as stored on a mass storage device or another computer coupled to the controller. The mass storage device can include a cache or other dataspace which can include databases. Memory storage, in other embodiments, is located in the “cloud”, where the memory is located at a distant location which provides the stored information wirelessly to the controller 900.

A power supply 910 provides a source of power to the electronics box 230 and to the motor 340. In different embodiments, the power supply 910 includes one more batteries or is a direct connection to electricity running through a building.

The controller 900 executes or otherwise relies upon computer software applications, components, programs, objects, modules, or data structures, etc. Software routines resident in the included memory of the controller or other memory are executed in response to the signals received. The computer software applications, in other embodiments, are located in the cloud. The executed software includes one or more specific applications, components, programs, objects, modules or sequences of instructions typically referred to as “program code”. The program code includes one or more instructions located in memory and other storage devices which execute the instructions which are resident in memory, which are responsive to other instructions generated by the system, or which are provided a user interface operated by the user. The controller is configured to execute the stored program instructions.

While each of the different components of the system 110 are shown being coupled to a single controller 900, other configurations are contemplated. For instance in one embodiment, the magnet sensor 906, the reset button 914, and the reset light 916 are located on a first circuit board while the remaining components are located on a second circuit board. Consequently, the embodiment of FIG. 9 is not considered to be limiting and other arrangements of components and circuit boards are considered to be within the scope of the present disclosure.

As illustrated in FIG. 9, the user sensor 110 is operatively connected to the electronics box 230 and to the processor 902. An indicator 912 is also coupled to the controller 902 and provides one or more status indications to a user of the apparatus 100, such as further described with respect to FIG. 10. In one embodiment, the indicator 912 is a ring light, or circle light, that surrounds a window 918 as is illustrated in FIG. 11. In different embodiments, the window is one of transparent, opaque, or translucent window. In other embodiments, the window 918 is not included. In different embodiments, the indicator 912 is a light emitting diode, an incandescent light, or a halogen light. Other type of lights are contemplated.

FIG. 10 is a process diagram 928 illustrating one or more operating procedures of the apparatus 100. In block 930, the user sensor 110, which is in a detection mode when powered by the power supply 910, is activated by a user by waving a hand or other object. Once triggered, the processor 900 detects the activation, an object sensing event, at block 930 and in response, rotates the motor shaft to dispense one of the sheets of material from the sheet material card 412 as described herein. At the same time, the processor 900 transmits a signal to the indicator 912, i.e. a light, at block 932. The light is illuminated to notify the user that the sensor 110 has detected the presence of the user. Once the motor shaft has rotated a predetermined distance, the cam 333 engages the switch 331. When the switch changes states, the change being determined by the controller 900, the controller 900 turns off the motor 340 to prevent further dispensing of the sheet. In addition to turning off the motor 340, the controller 900 changes a sheet count stored in a counter, which in one embodiment is located in the memory 904 as illustrated at block 934.

The counter is either incremented or decremented depending on how the processor 900 is programmed. In one embodiment, the counter is set to a maximum value representing a number of sheets, for instance 100 sheets, and the value is reduced by one each time the motor 340 turns one revolution as determined by the switch 331. When the count reaches zero, the processor sets a flag to indicate that the card 412 needs replacement. In another embodiment, the counter is initially set to zero and the count is increased until the count reaches a maximum value. For instance, if the card 412 typically includes 105 sheets, the maximum value could be set to 100. A predetermined threshold value of 100 is set, and when the count reaches 100, the processor 900 sets a flag to indicate the card needs replacement.

While revolutions of the motor shaft are used to determine sheet count, other mechanisms to count sheets are contemplated. For instance in one embodiment, a monitoring device monitors a thickness of the sheets remaining in the card and when the card is sufficiently thin, the monitoring device transmits a signal to the processor 900 to indicate that the card should be replaced. In other embodiments, a direct counting of sheets is contemplated where a leading edge or trailing edge of a sheet is identified by a sensor that transmits to the processor 900 a signal indicating that a sheet has been dispensed.

Once the motor shaft has dispensed the sheet, the processor 900 delays activation of the motor in response to the user sensor 110 for a predetermined period of time. In one embodiment the period of time for delay is 10 seconds, however, other periods of time are contemplated. In different embodiments, the processor 900 includes a programmable delay which enables a user, a maintenance person, or an installer of the apparatus 100 to set the delay time.

Assuming that a sufficient number of motor rotations have occurred, the controller 900 determines that the card 412 should be replaced. Upon making this determination, the indicator 912 is alternately turned on and off by the processor to indicate the lack of sheets at block 938. If it is determined by the user that the indicator 912 is flashing, the process proceeds to block 940. If, however, the indicator 912 is not flashing, the process returns to block 930 to wait for an activation of the sensor at block 930.

If the light indicates that a new card should be placed in the apparatus 100, the user or a maintenance person opens the cover 202, or door, at block 940, and inserts a card 412, i.e. sheet refill, into the apparatus 100 at block 942. To indicate that a new card 412 has been inserted, the installer of the card 412 presses the reset button 916 at block 944. Upon a pressing of the reset button 944, the processor 900 transmits a signal to the reset light 916 to illuminate the light for a predetermined period of time of 3 seconds at block 946. Other periods of time are contemplated and can be stored into the memory 904 to control the duration of illumination of the reset light 916. The counter is also reset by the processor to indicate that the apparatus has been refilled with a new card of sheet at block 948. In other embodiments, the reset button 916 is not pressed manually, but the closing of the door automatically presses a button to provide the reset of the counter.

Once the reset button is pushed, the cover 202 is closed at block 950. After closing, the magnet 908 of the card 412 is sensed by the magnet sensor 906 and the magnet sensor transmits a signal to the processor 900. The processor 900, in response to this signal, prevents activation of the motor 340 for a predetermined period of time, i.e. 30 seconds, at block 952. Other periods of time are contemplated and in different embodiments, the period of time is programmable.

The processor 900 is also programmed to determine the state of or power level provided by the power supply 910. In the case where the power supply is a battery supply, the processor 900 determines whether the power supplied by the batteries is too low when compared to a threshold value. In other embodiments, the power level detector is separate from the processor. If the battery power is acceptable as determined at block 954, the light 912 is not turned on continuously and the processor continues to determine the state of the sensor 110 at block 930. If however, the battery power is too low (not acceptable), then the processor illuminates the light 912 continuously to indicate that the batteries should be replaced at block 956. Once the batteries are replaced, the processor 900 determines that the battery power is acceptable and prevents activation of the motor 340 for a period of 30 seconds after replacing the batteries. After the batteries are replaced and the delay has transpired, the apparatus 100 returns to block 930 to provide sheets.

While the process diagram 928 illustrates a certain order of steps, the present disclosure is not limited to the illustrated order of steps and other orders of steps are contemplated and do occur. For instance, step 954 is shown to occur after preventing activation of the motor for 30 seconds and after a reset to the sheet counter. The processor 900 in one embodiment, however, monitors battery power continuously during the entire sheet dispensing procedure. Consequently, the continuous illumination of the light 912 occurs at any time when power supplied by the power supply 910 is insufficient and not only after step 952. Likewise in different embodiments, the processor 900 monitors the counting of sheets continuously and a flashing of the light at block 938 occurs at different times during the process. For instance, in one embodiment, continuous illumination of the light 912 takes precedence over a flashing illumination of the light, such that once the batteries are replaced, the light flashes to indicate that the sheet card is empty. In other embodiments, detection of the number of sheets and the power supplied by the batteries occur at predetermined periods of times, for instance every minute, as interrogated by the processor 900.

Different features are indicated by different light illumination patterns. For instance, the light flashes to indicate that the card 412 should be changed and the light is illuminated continuously to indicate that the power supply is not supplying sufficient power. In other embodiments, however, the illuminations patterns are reversed such that flashing lights indicate that the power is low and continuous illumination indicates that the card should be changed. Consequently, while different patterns of lights are described as signifying different conditions of the sheet dispensing apparatus, other patterns of illumination are contemplated.

In another embodiment, and as further illustrated in FIGS. 11 and 12, the window 918 includes a metallic disk 960 that cooperates with a capacitive sensor 962 (see FIG. 12), which is electrically coupled to a printed circuit board 964. The indicator 912 circumscribes the metallic disk 960, which in one embodiment is a stainless steel disk. Other materials for the metallic disk 960 are contemplated. The interaction between the metallic disk 960 and the sensor 962 determines the presence of an individual, such as a waving of a hand. The printed circuit board 964 is fixedly coupled to the cover 202 at a plurality of bosses where FIG. 12 illustrates a first boss 966 and a second boss 968. In one embodiment, the bosses 966 and 968 are made as part of the cover 202 during an injection molding process. In the illustrated embodiment, the window 918 is generally located at the center of the cover 202. Other locations are contemplated.

An electronics box 970, in different embodiments, includes at least one printed circuit board. Electronics box 970 may include at least one programmable controller chip. Electronics box 970 may include circuitry and other wiring necessary for the operation of apparatus 200. For example, sensor 962, in one embodiment, is in electrical communication with electronics box 970. As another example, a motor (not shown) may be in electrical communication with electronics box 970. A power source (not shown), in different embodiments, includes at least one of: a battery, electricity from wall receptacle, electricity from a generator, a solar panel, a photo panel, and the like for powering the electrical components. While the electronics box 970 is illustrated at a position toward an upper portion of the apparatus 200, other locations are contemplated.

As stated above, while the present application has been illustrated by the description of embodiments thereof, and while the embodiments have been described in considerable detail, it is not the intention of the applicants to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art, having the benefit of the present application. Therefore, the application, in its broader aspects, is not limited to the specific details, illustrative examples shown, or any apparatus referred to. Departures may be made from such details, examples, and apparatuses without departing from the spirit or scope of the general inventive concept. 

What is claimed is:
 1. A method for dispensing with a sheet dispenser a sheet from a plurality of sheets, the method comprising: detecting a plurality of object sensing events with an object sensor; for each object sensing event, moving a supply roller into contact with a sheet of the plurality of sheets and rotating a motor shaft to dispense the sheet with the supply roller; for each rotation of the motor shaft, updating a value stored in a counter to indicate the number of sheets being dispensed from the plurality of sheets; comparing the stored value to a predetermined value; and illuminating a light to emit a first pattern when the stored number reaches the predetermined value, wherein the light illumination provides an indication that the sheet dispenser requires additional sheets for dispensing.
 2. The method of claim 1 further comprising for each object sensing event, not rotating the motor shaft in response to a second object sensing event when a first object sensing event is followed by the second object sensing event within a predetermined amount of time.
 3. The method of claim 2 wherein the predetermined amount of time is about 10 seconds or less.
 4. The method of claim 2 further comprising setting the stored value to a different value in response to a reset button being activated.
 5. The method of claim 4 further comprising detecting a power level of a power supply.
 6. The method of claim 5 further comprising illuminating the light to emit a second pattern when the detected power level of the power supply is less than a predetermined value.
 7. The method of claim 6 wherein the first pattern is one of a flashing pattern and a continuous pattern and the second pattern is the other of the flashing pattern and the continuous pattern.
 8. A sheet dispensing apparatus including a wall configured to support a sheet material card having a plurality sheets, the apparatus comprising: an object sensor configured to dispense a sheet from the sheet material card in response to activation by a user; a supply roller connected to a shaft, wherein the supply roller has a radiused portion and at least one truncated portion; a retracting roller connected to the shaft, wherein the retracting roller has a radiused portion, and at least one truncated portion; a supporting plate engaged and disengaged by the retracting roller during rotation of the shaft; wherein, the radiused portion of the supply roller is directed in a first direction and the radiused portion of the retracting roller is directed in a second direction, the first direction being different from the second direction, wherein, the object sensor is operatively connected to the shaft through a processor and activates disengagement of the retracting roller from the supporting plate and activates the supply roller to translate toward the wall of the sheet dispensing apparatus for dispensing a sheet from the sheet material card.
 9. The sheet dispensing apparatus of claim 8 further comprising a counter having a count, wherein the counter prevents disengagement of the retracting roller and activation of the supply roller in response to activation of the object sensor based on the count of the counter.
 10. The sheet dispensing apparatus of claim 9 wherein the count of the counter is about 10 seconds.
 11. The sheet dispensing apparatus of claim 9 further comprising a motor, operatively connected to the shaft, and a power supply operatively connected to the motor, wherein the power supply provides power for operation of the motor.
 12. The sheet dispensing apparatus of claim 11 further comprising a power level detector operatively connected to the power supply, wherein the power level detector determines the power level of the power supply.
 13. The sheet dispensing apparatus of claim 12 further comprising an indicator operatively connected to the processor, wherein the processor is configured to provide a status indication to the indicator in response to the determined power level provided by the power level detector.
 14. The sheet dispensing apparatus of claim 13 further comprising a reset button operatively connected to the processor, wherein the reset button reset the count of the counter.
 15. The sheet dispensing apparatus of claim 14 further comprising a magnet sensor spaced from the wall, wherein the magnet sensor is configured to detect the presence of a magnet located on the sheet material card.
 16. A sheet dispensing apparatus including a wall configured to support a sheet material card having a plurality sheets, the apparatus comprising: a sensor; a motor including a motor shaft; a supply roller operatively connected to the motor; an indicator; and a controller operatively connected to the sensor and to the indicator, the controller including a processor and a memory configured to store program instructions and the processor is configured to execute the stored program instructions to: detect a first presence of an object with the sensor; move the supply roller into contact with one sheet of the plurality of sheets in response to the detecting the first presence of the object; rotate the motor shaft a first time to move the supply roller a predetermined angle of rotation to dispense the one sheet; and stop the motor shaft when the predetermined angle of rotation has been completed.
 17. The sheet dispensing apparatus of claim 16 wherein the processor is further configured to execute the stored program instruction to: detect a second presence of an object with the sensor; and not rotate the motor shaft a second time if the detect the second presence occurs within a predetermined period of time of the detect the first presence of an object.
 18. The sheet dispensing apparatus of claim 17 further comprising a switch operatively connected to the processor and wherein the processor is further configured to execute the stored program instruction to: stop the motor shaft in response to contact with the switch during rotation of the motor shaft.
 19. The sheet dispensing apparatus of claim 18 further comprising a cam operatively connected to the motor shaft and configured to contact the switch during rotation of the motor shaft, wherein the processor is further configured to execute the stored program instruction to: count the number of times the cam contacts the switch; and activate the indicator when the count indicates that sheet material card requires replacement.
 20. The sheet dispensing apparatus of claim 19 further comprising a power supply to supply power and operatively connected to the controller, wherein the processor is further configured to execute the stored program instructions to: determine when the power supplied by the power supply is insufficient to operate the motor. 